Dual 18650 Battery Charger, Lithium Batteries 3.7V Suitable for 18500 21700 26650 14500 16340 10440 Rechargeable

Extensive Battery Compatibility: This universal USB vape battery charger station offers exceptional versatility for all your rechargeable power needs. Designed to accommodate a wide array of 3.7V lithium-ion batteries, it seamlessly supports models ranging from compact 14500 to large-capacity 26700 sizes, including popular 18650, 21700, and 26650 types. The dual independent charging bays automatically detect and deliver the optimal current for each battery size. Comprehensive Protection System: Engineered with sophisticated safety technology, this rechargeable battery charger provides complete peace of mind during operation. Its advanced protection system continuously monitors for potential hazards including overcharging, overcurrent, overvoltage, short circuits, and overheating. The smart IC automatically adjusts charging parameters and will safely terminate power once batteries reach full capacity. Intelligent Visual Indicators: Stay perfectly informed about rechargeable batteries and charger progress through the sophisticated LED indicator system. Each of the two charging slots features independent multi-stage lighting that clearly displays current status: flashing blue light indicates active charging at different power levels (25%, 50%, 75%), while a solid blue illumination signals full charge completion. This intuitive visual system eliminates guesswork. Smart Charging Technology: Experience superior universal battery charger performance through advanced intelligent pulse technology. The built-in precision chip automatically implements a three-stage charging program - beginning with gentle trickle charging for deeply drained batteries, transitioning to optimal constant current for rapid power delivery, and finishing with constant voltage for safe saturation. This sophisticated approach ensures faster. Portable Universal Design: Combining exceptional portability with universal connectivity, this compact 3.7v battery charger (117×58×28mm) features modern USB-C input compatibility. You can conveniently power it using various sources including wall adapters, power banks, car chargers, or laptops. The lightweight yet durable construction, coupled with its space-saving footprint, makes it an ideal travel companion for charging your essential batteries anywhere.